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US3843358A - Master aluminum cobalt alloy - Google Patents

Master aluminum cobalt alloy Download PDF

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Publication number
US3843358A
US3843358A US00094191A US9419170A US3843358A US 3843358 A US3843358 A US 3843358A US 00094191 A US00094191 A US 00094191A US 9419170 A US9419170 A US 9419170A US 3843358 A US3843358 A US 3843358A
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US
United States
Prior art keywords
alloy
aluminum
weight
master
cobalt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00094191A
Inventor
R Schoerner
E Chia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southwire Co LLC
Original Assignee
Southwire Co LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Southwire Co LLC filed Critical Southwire Co LLC
Priority to US00094191A priority Critical patent/US3843358A/en
Priority to EG279/71A priority patent/EG10355A/en
Priority to PH12605A priority patent/PH10008A/en
Priority to FI1919/71A priority patent/FI55054C/en
Priority to CA117,693A priority patent/CA967405A/en
Priority to BE769779A priority patent/BE769779A/en
Priority to CY957A priority patent/CY957A/en
Priority to DE2134393A priority patent/DE2134393C2/en
Priority to IE879/71A priority patent/IE36732B1/en
Priority to IL37282A priority patent/IL37282A/en
Priority to SE7109001A priority patent/SE378429B/xx
Priority to PL14939271A priority patent/PL84071B1/pl
Priority to RO67633A priority patent/RO62020A/ro
Priority to IS2020A priority patent/IS947B6/en
Priority to FR7125443A priority patent/FR2098364A1/en
Priority to CH1022271A priority patent/CH584761A5/xx
Priority to DK342871A priority patent/DK144739C/en
Priority to ES393216A priority patent/ES393216A1/en
Priority to LU63524D priority patent/LU63524A1/xx
Priority to NO2683/71A priority patent/NO137408C/en
Priority to NLAANVRAGE7109663,A priority patent/NL175931C/en
Priority to JP49053757A priority patent/JPS5222886B2/ja
Publication of US3843358A publication Critical patent/US3843358A/en
Application granted granted Critical
Priority to CA214,268A priority patent/CA987137A/en
Priority to JP51061693A priority patent/JPS5235114A/en
Priority to JP51061690A priority patent/JPS5235111A/en
Priority to JP51061691A priority patent/JPS5235112A/en
Priority to JP51061692A priority patent/JPS5235113A/en
Priority to JP14006376A priority patent/JPS5284110A/en
Priority to JP10671779A priority patent/JPS5554542A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023—Alloys based on aluminium

Definitions

  • the present invention concerns an aluminum base alloy especially suited for use in preparing high strength lightweight articles of manufacture.
  • the present alloy is particularly well suited for use in preparing wire, rod, cable, connectors, bus bars, receptacle plugs, or other electrical contact devices for conducting electricity.
  • the aluminum base master alloy is prepared by mixing cobalt, iron and magnesium with aluminum in a furnace to obtain a concentrated melt having requisite percentages of elements in solution. It has been found that suitable results are obtained with cobalt present in a weight percentage of about 8% to about 64%. Superior results are achieved when cobalt is present in a weight percentage of about 10% to about and particularly superior and preferred results are obtained when cobalt is present in a percentage by weight of about 12% to about 16%.
  • Suitable results are obtained with iron present in a weight percentage of about 8% to about 52%. Superior results are achieved when iron is present in a weight per centage of 8% to about 16% and particularly superior and preferred results are obtained when iron is present in a percentage by weight of about 9% to about 13%.
  • Suitable results are obtained with magnesium present in a weight percentage of about 0.04% to about Superior results are achieved when magnesium is present in a weight percentage of about 0.5% to about 10% and particularly superior and preferred results are obtained when magnesium is present in a percentage by weight of about .6% to about 2%.
  • the aluminum content of the present alloy may vary from about 24% to about 83.96% by weight with superior results being obtained when the aluminum content varies between about 60% and 81.5% by weight. Particularly superior and preferred results are obtained when aluminum is present in a weight percentage of about 70% to about 78.4%. Since the percentages for maximum and minimum aluminum do not correspond with the maximums and minimums for alloying elements, it should be apparent that suitable results are not obtained if the maximum percentages for all alloying elements are employed.
  • the aluminum component prior to adding to the melt may be supplied from a high purity aluminum or a commercial aluminum alloy so long as the trace elements other than cobalt, iron and magnesium are less than 0.05 weight percentage each and 0.1 weight percentage total.
  • the addition of cobalt, iron and magnesium should then be adjusted depending upon the concentration of that element in the commercial aluminum alloy.
  • the master alloy is prepared in a furnace by adding aluminum, elemental cobalt, elemental iron and elemental magnesium to achieve the desired percentages for components.
  • the preparation of the master alloy may begin with the production of an intermediate iron master alloy, cobalt master alloy or magnesium alloy or combinations of the two.
  • the intermediate alloy would then be added to a furnace with requisite percentages of the remaining elements to achieve the desired master alloy element concentration.
  • the furnace is heated to a temperature of about 750 C. to about 1650" C. for a period of time until all the components of the alloy are in solution.
  • an induction furnace be used since inherent agitation of the melt is obtained with this furnace.
  • Other furnaces such as an electric or gas fired furnace may be used with a stirring apparatus in place of a degassing mechanism to insure uniform distribution of alloying elements in the aluminum.
  • the master alloy melt is poured into ingot molds and cooled to a solid condition.
  • the ingots of master alloy are preferably used in preparing a commercial alloy containing at least 97% aluminum.
  • the commercial alloy is prepared by adding a base aluminum alloy containing less than 0.1% by weight elements other than cobalt, iron and magnesium to a furnace. Conventionally the concentration of iron and magnesium in a base aluminum alloy is less than 0.3% by weight and the concentration of cobalt in a base aluminum alloy is less than 0.001% by weight.
  • the temperature of.the base aluminum alloy in the furnace is increased to a point above its melting point, normally from 1 to 100 C. above the melting point, and the base alloy melts to a liquid.
  • Requisite amounts of master alloy ingots are then added to the melt of base alloy (due consideration being given to the concentration of alloying elements in the base alloy) to obtain a desired concentration of alloying elements in aluminum.
  • the temperature of'the mixture of base alloy and master alloy is then increased to a point above the melting point of the master alloy, normally from 1 to 100 above the master alloy melting point, and the master alloy melts and dissolves in the base alloy.
  • the alloying elements go into solution in the base alloy expediently since those elements are in solution in the aluminum of the master alloy.
  • an induction furnace be used during the preparation of the commercial alloy since inherent agitation is obtained with this furnace.
  • the commercial aluminum alloy may then be cast into ingots for subsequent use in the preparation of conventional metallic articles of manufacture or may be cast into a continuous bar which is rolled and drawn into wire of various gauges and various physical properties depending upon the exact concentration of alloying elements in the aluminum of the alloy.
  • the master alloy as prepared is in the preparation of conventional articles of manufacture such as structural members, fasteners, automotive parts and the like.
  • the master alloy may either be cast from a molten condition into the desired article of manufacture or an ingot of master alloy may be forged and otherwise worked into the desired article of manufacture.
  • a master alloy melt is prepared at a temperature of 1050" C. by adding pounds of elemental cobalt, 14 pounds of elemental iron, 6 pounds of elemental magnesium and 60 pounds of aluminum to an induction furnace. The melt is held in the furnace until all the allowing elements are in solution as shown by spectrographic analysis of melt samples. The molten master alloy is then poured into ingot molds and cooled to a solid condition.
  • an ingot After cooling, an ingot is reheated to a molten condition and cast into several commercial articles of manufacture such as pans, containers and fasteners.
  • An aluminum alloy consisting essentially of about 10% to about 20% by weight cobalt, about 8% to about 16% by weight iron, about 0.5% to about 10% by weight magnesium, and from about 81.5% to about by weight aluminum.
  • the aluminum alloy of claim 1 consisting essentially of about 12% to about 16% by weight cobalt, about 9% to about 13% by weight iron, about 0.6% to about 2% by weight magnesium and from about 78.4% to about by weight aluminum.
  • Method of making a master aluminum alloy ingot consisting essentially of heating a mixture of 10%. to 20% by weight cobalt, 8% to 16% by weight iron, 0.5% to 10% by weight magnesium and 81.5 to 60% by weight aluminum in a furnace at a temperature of 750 C. to 1650" C. until the mixture forms a molten mass; pouring the molten mass into an ingot mold; and cooling the mold to solidify the molten mass into an ingot.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1. AN ALUMINUM ALLOY CONSISTING ESSENTIALLY OF ABOUT 10% TO ABOUT 20% BY WEIGHT COBALT, ABOUT 8% TO ABOUT 16% BY WEIGHT IRON, ABOUT 0,5% TO ABOUT 10% BY WEIGHT MAGNESIUM, AND FROM ABOUT 81.5% TO ABOUT 60% BY WEIGHT ALUMINUM.

Description

3,843,358 MASTER ALUMINUM COBALT ALLOY Roger J. Schoerner and Enrique C. Chia, Carrollton, Ga.,
assignors to Southwire Company, Carrollton, Ga. No Drawing. Continuation-impart of abandoned application Ser. No. 54,563, July 13, 1970. This application Dec. 1, 1970, Ser. No. 94,191
Int. Cl. C22c 21/00 U.S. Cl. 75-147 3 Claims ABSTRACT OF THE DISCLOSURE Master aluminum alloy containing from about 8% to about 64% by weight cobalt, about 8% to about 52% iron, about .04% to about 40% of magnesium, and from about 24% to about 83.96% by weight aluminum. The alloy is particularly suited for use with additional amounts of aluminum in preparing a commercial alloy which may be cast, rolled and drawn into an electrically conductive aluminum alloy wire having improved properties of increased thermal stability, tensile strength, percent ultimate elongation, ductility, fatigue resistance and yield strength. The alloy may also be used in the preparation of articles of commerce conventionally prepared from aluminum alloys.
CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation-in-part of our copending application Ser. No. 54,563, filed July 13, 1970, now abandoned.
DISCLOSURE The present invention concerns an aluminum base alloy especially suited for use in preparing high strength lightweight articles of manufacture. The present alloy is particularly well suited for use in preparing wire, rod, cable, connectors, bus bars, receptacle plugs, or other electrical contact devices for conducting electricity.
It is an object of the present invention to provide a new aluminum master alloy which may be blended with additional amounts of aluminum to provide a commercial aluminum alloy which is suitable for use in manufacturing improved electrical conductors. It is an alternative object of the present'invention to provide a new aluminum alloy which is suitable for use in preparing conventional articles of manufacture such as structural members, fasteners, automotive parts and the like.
In accordance with the present invention, the aluminum base master alloy is prepared by mixing cobalt, iron and magnesium with aluminum in a furnace to obtain a concentrated melt having requisite percentages of elements in solution. It has been found that suitable results are obtained with cobalt present in a weight percentage of about 8% to about 64%. Superior results are achieved when cobalt is present in a weight percentage of about 10% to about and particularly superior and preferred results are obtained when cobalt is present in a percentage by weight of about 12% to about 16%.
Suitable results are obtained with iron present in a weight percentage of about 8% to about 52%. Superior results are achieved when iron is present in a weight per centage of 8% to about 16% and particularly superior and preferred results are obtained when iron is present in a percentage by weight of about 9% to about 13%.
Suitable results are obtained with magnesium present in a weight percentage of about 0.04% to about Superior results are achieved when magnesium is present in a weight percentage of about 0.5% to about 10% and particularly superior and preferred results are obtained when magnesium is present in a percentage by weight of about .6% to about 2%.
United States Patent 0 3,843,358 Patented Oct. 22, 1974 The aluminum content of the present alloy may vary from about 24% to about 83.96% by weight with superior results being obtained when the aluminum content varies between about 60% and 81.5% by weight. Particularly superior and preferred results are obtained when aluminum is present in a weight percentage of about 70% to about 78.4%. Since the percentages for maximum and minimum aluminum do not correspond with the maximums and minimums for alloying elements, it should be apparent that suitable results are not obtained if the maximum percentages for all alloying elements are employed.
During preparation of the alloy, the aluminum component prior to adding to the melt may be supplied from a high purity aluminum or a commercial aluminum alloy so long as the trace elements other than cobalt, iron and magnesium are less than 0.05 weight percentage each and 0.1 weight percentage total. The addition of cobalt, iron and magnesium should then be adjusted depending upon the concentration of that element in the commercial aluminum alloy.
PREPARATION OF MASTER ALLOY The master alloy is prepared in a furnace by adding aluminum, elemental cobalt, elemental iron and elemental magnesium to achieve the desired percentages for components. Of course, it should be understood that the preparation of the master alloy may begin with the production of an intermediate iron master alloy, cobalt master alloy or magnesium alloy or combinations of the two. The intermediate alloy would then be added to a furnace with requisite percentages of the remaining elements to achieve the desired master alloy element concentration.
The furnace is heated to a temperature of about 750 C. to about 1650" C. for a period of time until all the components of the alloy are in solution. During the preparation of the master alloy, it is preferred that an induction furnace be used since inherent agitation of the melt is obtained with this furnace. Other furnaces such as an electric or gas fired furnace may be used with a stirring apparatus in place of a degassing mechanism to insure uniform distribution of alloying elements in the aluminum.
After a solution of elements and aluminum is obtained, the master alloy melt is poured into ingot molds and cooled to a solid condition.
The ingots of master alloy are preferably used in preparing a commercial alloy containing at least 97% aluminum. The commercial alloy is prepared by adding a base aluminum alloy containing less than 0.1% by weight elements other than cobalt, iron and magnesium to a furnace. Conventionally the concentration of iron and magnesium in a base aluminum alloy is less than 0.3% by weight and the concentration of cobalt in a base aluminum alloy is less than 0.001% by weight. The temperature of.the base aluminum alloy in the furnace is increased to a point above its melting point, normally from 1 to 100 C. above the melting point, and the base alloy melts to a liquid. Requisite amounts of master alloy ingots are then added to the melt of base alloy (due consideration being given to the concentration of alloying elements in the base alloy) to obtain a desired concentration of alloying elements in aluminum. The temperature of'the mixture of base alloy and master alloy is then increased to a point above the melting point of the master alloy, normally from 1 to 100 above the master alloy melting point, and the master alloy melts and dissolves in the base alloy. Through the use of the master alloy, the alloying elements go into solution in the base alloy expediently since those elements are in solution in the aluminum of the master alloy.
It is preferred that an induction furnace be used during the preparation of the commercial alloy since inherent agitation is obtained with this furnace. Other furnaces,
such as "electric and 'gas fired furnaces, may also be used with an appropriate stirring apparatus in place or a degassing mechanism to insure proper agitation.
The previously described method of preparing a commercial alloy is preferred in the present invention. However, it should be understood that suitable results are obtained when molten master alloy is added to molten base aluminum alloy or molten base aluminum alloy is added to molten master alloy. Of course, ingots of master alloy may also be added to a furnace or metal conveying system prior to the addition of a molten base aluminum alloy.
The commercial aluminum alloy may then be cast into ingots for subsequent use in the preparation of conventional metallic articles of manufacture or may be cast into a continuous bar which is rolled and drawn into wire of various gauges and various physical properties depending upon the exact concentration of alloying elements in the aluminum of the alloy.
An alternative but suitable use for the master alloy as prepared is in the preparation of conventional articles of manufacture such as structural members, fasteners, automotive parts and the like. The master alloy may either be cast from a molten condition into the desired article of manufacture or an ingot of master alloy may be forged and otherwise worked into the desired article of manufacture.
A more complete understanding of the invention will be obtained from the following examples:
EXAMPLE NO. 1
A master alloy melt is prepared at a temperature of 1050" C. by adding pounds of elemental cobalt, 14 pounds of elemental iron, 6 pounds of elemental magnesium and 60 pounds of aluminum to an induction furnace. The melt is held in the furnace until all the allowing elements are in solution as shown by spectrographic analysis of melt samples. The molten master alloy is then poured into ingot molds and cooled to a solid condition.
After cooling, an ingot is reheated to a molten condition and cast into several commercial articles of manufacture such as pans, containers and fasteners.
EXAMPLE NOS. 2 THROUGH 11 Temps, Mg 0.
Example number p OOGIBNUINWC? Norm-All of the above amounts are in pounds.
While this invention has been described in detail with particular reference to preferred embodiments thereof, it will be understood that variations and modifications can be effected within the spirit and scope of the invention as described hereinbefore and as defined in the appended claims.
We claim:
1. An aluminum alloy consisting essentially of about 10% to about 20% by weight cobalt, about 8% to about 16% by weight iron, about 0.5% to about 10% by weight magnesium, and from about 81.5% to about by weight aluminum. 1
2. The aluminum alloy of claim 1 consisting essentially of about 12% to about 16% by weight cobalt, about 9% to about 13% by weight iron, about 0.6% to about 2% by weight magnesium and from about 78.4% to about by weight aluminum.
,3. Method of making a master aluminum alloy ingot consisting essentially of heating a mixture of 10%. to 20% by weight cobalt, 8% to 16% by weight iron, 0.5% to 10% by weight magnesium and 81.5 to 60% by weight aluminum in a furnace at a temperature of 750 C. to 1650" C. until the mixture forms a molten mass; pouring the molten mass into an ingot mold; and cooling the mold to solidify the molten mass into an ingot.
References Cited UNITED STATES PATENTS 3,160,513 12/1964 Westerveld et al. 2,170,039 8/1939' Steudel 147 FOREIGN PATENTS 498,227 1/1939 Great Britain. 706,721 6/1931 gFrance.
OTHER REFERENCES Krupotkin et al., the mechanical properties of AVOOO aluminum with small additions of different elements, Metals Abstract, December 1969, 31 2291.
Krupotkin, influence of small additions of iron, nickel and cobalt on mechanical properties and conductivity of aluminum, Slavic Library, Nov. 30, 1965, Battelle Memorial Institute.
RICHARD O. DEAN, Primary Examiner US. Cl. X.R.

Claims (1)

1. AN ALUMINUM ALLOY CONSISTING ESSENTIALLY OF ABOUT 10% TO ABOUT 20% BY WEIGHT COBALT, ABOUT 8% TO ABOUT 16% BY WEIGHT IRON, ABOUT 0,5% TO ABOUT 10% BY WEIGHT MAGNESIUM, AND FROM ABOUT 81.5% TO ABOUT 60% BY WEIGHT ALUMINUM.
US00094191A 1970-07-13 1970-12-01 Master aluminum cobalt alloy Expired - Lifetime US3843358A (en)

Priority Applications (29)

Application Number Priority Date Filing Date Title
US00094191A US3843358A (en) 1970-07-13 1970-12-01 Master aluminum cobalt alloy
EG279/71A EG10355A (en) 1970-07-13 1971-06-29 Aluminum alloy used for electrical conductors and other articles and method of making same
PH12605A PH10008A (en) 1970-07-13 1971-07-06 Aluminum alloy electrical conductor and method for making same
FI1919/71A FI55054C (en) 1970-07-13 1971-07-07 I ELEKTRISKA LEDNINGAR OCH ANDRA STYCKEN ANVAEND ALUMINIUMLEGERING SAMT FOERFARANDE FOER DESS FRAMSTAELLNING
CA117,693A CA967405A (en) 1970-07-13 1971-07-08 Aluminum alloy used for electrical conductors and other articles, and method of making same
CY957A CY957A (en) 1970-07-13 1971-07-09 Aluminum alloy used for electrical conductors and other articles and method of making same
DE2134393A DE2134393C2 (en) 1970-07-13 1971-07-09 Use of an aluminum alloy for the manufacture of electrically conductive objects
IE879/71A IE36732B1 (en) 1970-07-13 1971-07-09 Aluminium alloy electrical conductors and process of preparing same
IL37282A IL37282A (en) 1970-07-13 1971-07-09 Aluminum alloy used for electrical conductors and other articles,and method of making the same
BE769779A BE769779A (en) 1970-07-13 1971-07-09 ALUMINUM ALLOY;
CH1022271A CH584761A5 (en) 1970-07-13 1971-07-12
RO67633A RO62020A (en) 1970-07-13 1971-07-12
IS2020A IS947B6 (en) 1970-07-13 1971-07-12 Aluminum alloy used in electrical wiring and other components and methods for producing such an alloy
FR7125443A FR2098364A1 (en) 1970-07-13 1971-07-12 Aluminium alloys - of improved conductivity for electrical wire, cable and connections
SE7109001A SE378429B (en) 1970-07-13 1971-07-12
DK342871A DK144739C (en) 1970-07-13 1971-07-12 ALUMINUM-BASED, COBAL-CONTAINED ELECTRIC WIRE AND METHOD OF PRODUCING IT
PL14939271A PL84071B1 (en) 1970-12-01 1971-07-12
NLAANVRAGE7109663,A NL175931C (en) 1970-07-13 1971-07-13 USE OF AN ALUMINUM ALLOY AS AN ELECTRIC CONDUCTOR.
LU63524D LU63524A1 (en) 1970-07-13 1971-07-13
NO2683/71A NO137408C (en) 1970-07-13 1971-07-13 ALUMINUM-BASED ELECTRICAL CONDUCTOR AND PROCEDURE FOR MANUFACTURE THEREOF
ES393216A ES393216A1 (en) 1970-07-13 1971-07-13 Procedure for preparing an aluminum based alloy conductor. (Machine-translation by Google Translate, not legally binding)
JP49053757A JPS5222886B2 (en) 1970-07-13 1974-05-14
CA214,268A CA987137A (en) 1970-07-13 1974-11-20 Aluminum alloy used for electrical conductors and other articles and method of making same
JP51061693A JPS5235114A (en) 1970-07-13 1976-05-27 Aluminium alloy for conductor
JP51061692A JPS5235113A (en) 1970-07-13 1976-05-27 Aluminium alloy for conductor
JP51061690A JPS5235111A (en) 1970-07-13 1976-05-27 Aluminium alloy for conductor
JP51061691A JPS5235112A (en) 1970-07-13 1976-05-27 Aluminium alloy for conductor
JP14006376A JPS5284110A (en) 1970-07-13 1976-11-20 Aluminium alloy for conductor
JP10671779A JPS5554542A (en) 1970-07-13 1979-08-23 Electrically conductive aluminum alloy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5456370A 1970-07-13 1970-07-13
US00094191A US3843358A (en) 1970-07-13 1970-12-01 Master aluminum cobalt alloy

Publications (1)

Publication Number Publication Date
US3843358A true US3843358A (en) 1974-10-22

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US00094191A Expired - Lifetime US3843358A (en) 1970-07-13 1970-12-01 Master aluminum cobalt alloy

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IS (1) IS947B6 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100386459C (en) * 2006-06-14 2008-05-07 周贤言 Electronic communication shielded alloy wire and its production method
CN105551564A (en) * 2016-02-01 2016-05-04 安徽渡江电缆集团有限公司 Nickel alloy high-performance cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100386459C (en) * 2006-06-14 2008-05-07 周贤言 Electronic communication shielded alloy wire and its production method
CN105551564A (en) * 2016-02-01 2016-05-04 安徽渡江电缆集团有限公司 Nickel alloy high-performance cable

Also Published As

Publication number Publication date
IS2020A7 (en) 1973-01-14
IS947B6 (en) 1976-08-06

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